RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income	$ 9,616	$ 8,646	$ 7,193	$ 18,262	$ 12,804
Earnings Per Share, Basic	$ 0.93	$ 0.84	$ 0.97	$ 1.77	$ 1.72
Earnings Per Share, Diluted	$ 0.92	$ 0.84	$ 0.96	$ 1.76	$ 1.71
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income		$ 8,334
Earnings Per Share, Basic		$ 0.81
Earnings Per Share, Diluted		$ 0.81
Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income	$ 50	$ 312		$ 362
Earnings Per Share, Basic	$ 0.03	$ 0.03		$ 0.03
Earnings Per Share, Diluted	$ 0.00	$ 0.03		$ 0.00